1.0National History Dayhttps://nhd.org/arNHD Openboxrich600338<blockquote class="wp-embedded-content" data-secret="4hlxaLZGcs"><a href="https://nhd.org/ar/resources/2023-theme-qa/">جلسة أسئلة وأجوبة حول موضوع 2023: الحدود في التاريخ</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://nhd.org/ar/resources/2023-theme-qa/embed/#?secret=4hlxaLZGcs" width="600" height="338" title=""جلسة أسئلة وأجوبة لموضوع 2023: حدود في التاريخ" - National History Day" data-secret="4hlxaLZGcs" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://nhd.org/wp-includes/js/wp-embed.min.js /* ]]> */ </script>Join National History Day, Smithsonian's National Museum of the American Indian, the National Park Service, and the White House Historical Association to explore topic ideas for the 2023 Frontiers in History: People, Places, Ideas theme and get the answers to student questions.https://nhd.org/wp-content/uploads/2022/09/NHD_2022_SocialImage.jpg1200631